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Using 4G Hotspot with Prepaid Phone Sim

If I bought the TMobile Prepaid 4G HotSpot ($130 with $30 card right now) could I put my PHONE's sim card in there and use the included data on my plan (for example, 5 gigs unmetered on the $70 plan, and then metered afterwards)?

I know my phone can share out my data connection, but I believe its adhoc only, while the Mifi does infrastructure mode that some devices require. Other than that, my phone is not 4G so this would be a way to access 4G data when I really need it, and also to avoid draining the battery on my phone.

My summary question is -- are the 'data' devices locked to only use 'data' sims, or will they use 'phone' sims also and the data that's part of their plan?

Idk about that, I just gave a SIM to someone for the specific purpose of using in a Laptop Stick and this is the exact responce I received back, dated June 3, 2011.

It was perfect...when it is not in use in the usb modem, it can be used in any T-Mobile phone. Activating it online was easier than I ever imagined. It can even be used for the $1.49 broadband day pass...which T-Mobile will deduct the funds for from the prepaid balance on the account. (I don't use the mobile broadband every day so for me this is much less expensive than the weekly, monthly and "traditional" payment plans T-Mobile has available.) Thank you so much for it! Take care and have a wonderful day!